I will be flying with ryanair this weekend and to save paying for hold luggage we are just taking hand luggage. I understand that all fluids must be in containers of no more than 100mls and placed within a clear plastic resealable bag and that this can add up to 1000mls max within the bag. My question is, do the travel bottles I use have to have 100mls marked on them? I purchased and filled 100ml travel bottles. The packaging on the bottles stated that they could be used for hand luggage but I realised that the bottles themselves do not have 100mls written on them! Id struggle on holiday if they were taken away because due to allergies I have to be very carefull what sunscreen and other products I use!